SUSME Study Lesson Title: Charles’ Law Authors: Lise Gelatko, Miriam Miles, Jeffrey Willis, and Rodney Williams Grade/Subject: 8 Date: July 24, 2009 I. Need for this Lesson Use /Apply terms volume and temperature Connect temperature to the average kinetic energy of the particles Demonstrate effective cooperative learning skills and strategies II. Unit Information A. Name of the unit: Gas Laws B. Goal(s) of the unit: Connect temperature to the average kinetic energy of the particles C. Relationship of the Unit to the Curriculum Prerequisite Knowledge Previously Learned Concepts Kinetic Theory Energy of Matter Relationship between temperature and energy Concepts for this Unit Gas Laws: Charles’ Law and Boyles’ Law Related Concepts to be Learned in Future Units and Courses Conservation of Energy/Energy Transformations Differentiation between Kinetic and Potential Energy D. Possible Student Misconceptions 1. If a confined volume of gas expands when heated, it means that there are more gas molecules present. 2. If a gas volume expands with a temperature increase, the increase in volume is due to the expansion of the individual gas molecules. 3. Gases do not have any weight. Teachers should be aware that misconceptions may still exist regarding the kinetic theory of energy and matter, and be ready to address if necessary. If students demonstrate these misconceptions, they should be selected for the B group E. Instructional Plan for the Unit: Concept/Topic Kinetic Theory of Matter Charles’ Law Boyle’s Law * Indicates the lesson developed in this lesson plan # of Lessons (4) (2)* (2) III. Instructional Plan for this Study Lesson A. Title of the study lesson: Charles’ Law B. Standards Addressed (national, state): A.C.O.S. Objective 8.7.1 a – e: Define kinetic energy and kinetic theory of matter. C. Lesson Overview: Students should have prior knowledge regarding volume, temperature, graphing, kinetic theory of matter and measurement. D. Performance Objective(s): Define Charles’ Law and calculate Charles’ Law using the formula V1/T1 = V2/T2. E. Assessment Timeline Diagnostic - Before student work begins “Can Crushers” demonstration - journaling, class discussion, and debate Formative - During lesson Questioning, observing group progress, presentation of results and analysis Summative - After lesson is completed Lab Investigation Sheet Exit Ticket F. Materials/Resources (1000-mL beakers, thermometer, 12-oz aluminum can, balloons, string, tongs, safety goggles, metric ruler, 16 to 20oz plastic water/soda bottle, ice, hot plate, water, stop watch and pan G. Teaching/Learning Process of the Study Lesson Step Teaching/Learning Activities and time allocation (min) Engage Teacher demonstration of (5 min) Charles’ Law in which 25 ml of water is placed in a soda can and the can placed on a hot plate. When steam is seen coming out of the can opening, the teacher quickly inverts the can opening into the cold water bath. The can collapses, creating a loud sound. Handouts, equipment, supplies. Points to remember. Students explain their observations as completely as possible in their own lab composition notebooks. Equipment: Teacher needs: hot plate (2) empty 12oz. soda can water rectangular pan with ice water tongs Evaluate: Objective(s) addressed & how assessed. Teacher circulates around the classroom to read each student’s initial understanding of the concept. Explore (25 min) Teacher will aid students in Materials for each identifying steps of the student group: scientific method. Data sheet Students conduct an String investigation on Charles’ Law stop watch Students will complete data metric ruler table and graph results for (1)16 -20oz. balloon size and temperature. plastic *Teacher Notes: water/soda bottle Complete rough draft of (1) 9-inch graphs on Day 1. quality balloons Students may not (2) thermometers complete their graphs on (1) pair of tongs Day 1 due to safety goggles inexperience in graphing for each student properly with labels, and hot plate understanding variables. (2) 1000 – mL beakers Explain (15 min) Each group has a representative Large graph paper, to present and explain their pencils, markers, rulers, group data and graph results to and data sheet the class. Extend (5 min) Exit Ticket – Why did the can crush? Use the words temperature, volume, and energy in your answer. Homework: Answer the following question in 5 - 6 sentences: Why do engineers design buildings, sidewalks, and bridges with cracks, gaps, and sections? Students will need their own notebook and writing utensil. Students must be able to accurately apply the terms volume and temperature, and connect temperature to the average kinetic energy of the particles. Students will be grouped according to math level. Lower level students will be given a graph that has been labeled with independent and dependent variables and numbers. Higher level students will be given a blank graph. Teacher circulates and assesses students understanding of the data being collected and graphs being created. Teacher questions each group for valid and logical results before explaining Charles’ Law. . Allow students to discuss their rationale on the use of cracks, gaps, and section in building bridges and sidewalks using Think-Pair-Share strategy. Students demonstrate the kinetic theory of matter to relate temperature to particle movement. IV. Attachments (worksheets, labs, project guides, tests, rubrics, etc.) Teacher Notes - Charles' Law.doc Data Sheet - Charles' Law.doc